[OE-core] [PATCH v2 1/3] ccache.bbclass: enable max size setup for ccache dir

[Andre McCurdy]

On Thu, Jan 19, 2017 at 7:01 AM, Yannick Gicquel
<yannick.gicquel at iot.bzh> wrote:
> ccache directories are limited to 1G by default.

1G has been the default for a long time, so maybe it's time to propose
an upstream change to increase, e.g. to 10G, giving the size of the
webkitgtk build as justification?

Since we build ccache-native within oe-core, any such patch could be
applied to our version of ccache right now (ie we don't need to wait
for it to be accepted and merged upstream).

> This patch enables the configuration of their limits, and as default
> location is TMPDIR, it proposes a size limit to "0" (unlimited).
>
> The setup can be overloaded in local.conf by setting
> CCACHE_MAX_SIZE to a custom value if needed.
>
> Signed-off-by: Yannick Gicquel <yannick.gicquel at iot.bzh>
> ---
>  meta/classes/ccache.bbclass | 8 ++++++++
>  1 file changed, 8 insertions(+)
>
> diff --git a/meta/classes/ccache.bbclass b/meta/classes/ccache.bbclass
> index 93fcaca..b6643a1 100644
> --- a/meta/classes/ccache.bbclass
> +++ b/meta/classes/ccache.bbclass
> @@ -1,6 +1,14 @@
>  CCACHE = "${@bb.utils.which(d.getVar('PATH'), 'ccache') and 'ccache '}"
>  export CCACHE_DIR ?= "${TMPDIR}/ccache/${MULTIMACH_HOST_SYS}/${PN}"
>  CCACHE_DISABLE[unexport] = "1"
> +CCACHE_MAX_SIZE ?= "0"
>
>  do_configure[dirs] =+ "${CCACHE_DIR}"
>  do_kernel_configme[dirs] =+ "${CCACHE_DIR}"
> +
> +ccache_init() {
> +    if [ -n "${CCACHE}" ]; then
> +        ${CCACHE} -M ${CCACHE_MAX_SIZE}
> +    fi
> +}
> +do_configure[postfuncs] += "ccache_init"
> --
> 1.9.1
>
> --
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